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Author Topic: 4100.04 KHz "H"  (Read 4024 times)

Offline Teotwaki

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4100.04 KHz "H"
« on: May 03, 2021, 1355 UTC »
I was looking around with the KFS SE kiwi and spotted this beacon sending four dits
Jim
NRD-525, Elecraft KX3 and Elecraft PX3 Spectrum Display
76' end fed long wire & 66' off-center fed dipole for 10/20/40 meters
Orange County, SoCal, The better half

Offline zeak

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Re: 4100.04 KHz "H"
« Reply #1 on: May 04, 2021, 0237 UTC »
This one seems to be in and out maybe propagation maybe experimentation....also see "H and D they are back" (04_29_21) down the log. I've been hearing "H" since late September of last year from this location.

Today from this location "H" is barely copy-able, but sometimes ~0500Z it gets up to 579-589. Tonight, at 0230Z its 449 at best.

Receiver KiwiSDR
Ant: 80m dipole at 15m
location:  DM12
Zeak,

Receiver KiwiSDR
Ant(s): 80m dipole at 15m and 1m Loop
Location:  DM12

Offline Token

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Re: 4100.04 KHz "H"
« Reply #2 on: May 21, 2021, 0156 UTC »
Anyone notice the chirps on the dits?

T!
T!
Mojave Desert, California USA

Offline zeak

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Re: 4100.04 KHz "H"
« Reply #3 on: May 21, 2021, 0429 UTC »
Yes, I have noticed the chirps from time to time and I say that still without being able to identify whether the chirp is a product of backscatter, transition though the gray zone or an honest to goodness chirp.

I’ve determined that Beacon H is not ground wave to me at this location as is Windy and the Whooper beacon seem to be, so I treat the H beacon as something different and its signal which fades in with sunset here and fades out with sunrise indicating that it is not D-layer propagation. H beacon is kind of a puzzle to me that I’ve been playing with since first copying it in September of 2020.

Receiver KiwiSDR
Ant: 80m dipole at 15m
location:  DM12

Zeak,

Receiver KiwiSDR
Ant(s): 80m dipole at 15m and 1m Loop
Location:  DM12

dogman

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Re: 4100.04 KHz "H"
« Reply #4 on: May 26, 2021, 1217 UTC »
This morning H is solid copy but I notice the space between the id is now very small time wise.
Also on the NUT sdr about the same signal strength as 4094

Offline stendec

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Re: 4100.04 KHz "H"
« Reply #5 on: November 26, 2021, 0248 UTC »
I have not heard the 4100 kHz "H" Beacon in a a couple of months, but at 0230Z tonight, I'm hearing it nicely using the N. Utah omni SDR. It also comong through on KPH SDR.

On most SDRs at any time of the day or night I usually hear a carrier of some sort on 4100 - perhaps BCB interference. I'm guessing that H is usually in there, but covered up by the steady carrier.

stendec
« Last Edit: November 26, 2021, 0251 UTC by stendec »
/ STENDEC

Offline Teotwaki

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Re: 4100.04 KHz "H"
« Reply #6 on: November 26, 2021, 0310 UTC »
I have not heard the 4100 kHz "H" Beacon in a a couple of months, but at 0230Z tonight, I'm hearing it nicely using the N. Utah omni SDR. It also comong through on KPH SDR.

On most SDRs at any time of the day or night I usually hear a carrier of some sort on 4100 - perhaps BCB interference. I'm guessing that H is usually in there, but covered up by the steady carrier.

stendec

Thanks for bumping this topic!!! I can also hear it on the Utah omni
Jim
NRD-525, Elecraft KX3 and Elecraft PX3 Spectrum Display
76' end fed long wire & 66' off-center fed dipole for 10/20/40 meters
Orange County, SoCal, The better half

Offline l0ngwire

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Re: 4100.04 KHz "H"
« Reply #7 on: November 26, 2021, 0855 UTC »
Tonight at 0850 I can hear the "H" beacon directly here in Santa Barbara.  I can't hear Windy or the Desert Whooper.

dogman

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Re: 4100.04 KHz "H"
« Reply #8 on: November 27, 2021, 0102 UTC »
In Colorado H is s2 with a zero noise floor...Q 5 signal...will probably rise in strength throughout the night.

Heathkit

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Re: 4100.04 KHz "H"
« Reply #9 on: November 28, 2021, 0256 UTC »
"H" is coming into KPH SDR at Point Reyes at S7 at 0253Z. Making it's way up to VE7AV Prince George *just* audible.
(as sig ref at KPH, DW is coming in S20+ and Windy at S10)

73's

Offline ChrisSmolinski

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Re: 4100.04 KHz "H"
« Reply #10 on: December 01, 2021, 1209 UTC »
Hearing H 1209 UTC 1 Dec 2021 - A new one for me I think!
Chris Smolinski
Westminster, MD
eQSLs appreciated! csmolinski@blackcatsystems.com
netSDR / AFE822x / AirSpy HF+ / KiwiSDR / 900 ft Horz skyloop / 500 ft NE beverage / 250 ft V Beam / 58 ft T2FD / 120 ft T2FD / 400 ft south beverage / 43m, 20m, 10m  dipoles / Crossed Parallel Loop / Discone in a tree

Offline zeak

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Re: 4100.04 KHz "H"
« Reply #11 on: December 03, 2021, 1557 UTC »
Adding to the “H” chatter, “H” is heard regularly at DM12 and has been recorded regularly as it fades in between 1000Z and 1100Z very weakly each day since late September, conditions notwithstanding. Today at 1434Z, “H” peaked at 569 (sunrise at this location) and was gone at 1510Z. With that report, “H” seems to be becoming stronger as we proceed towards the winter months.

As I last reported in May of this year, I had first heard “H” in September of 2020, it became stronger during the winter months then either went off the air in spring or just drifted down into the QRN of summer, I suspect the latter. Although there is no Doppler on “H” during sunrise here, due to the signal behavior of “H”, I strongly suspect it to have an Asia Minor origin.


Receiver KiwiSDR
Ant: 80m dipole at 15m
location:  DM12
Zeak,

Receiver KiwiSDR
Ant(s): 80m dipole at 15m and 1m Loop
Location:  DM12

Heathkit

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Re: 4100.04 KHz "H"
« Reply #12 on: December 03, 2021, 1647 UTC »
...I strongly suspect it to have an Asia Minor origin.

Which coincides with another phenomenon I see in "H" - it's strongest when the Asian fishing boat chatter is as well.

73's

*edit*
Tonight I spent the past 2-1/2 hours on every working SDR from NZ to JP, across N and S America and this darn thing is skywave everywhere! Seems only readable N-S line W of the rockies. Thought for sure I'd hear it in HI, where DW is making it in. Nope!
« Last Edit: December 04, 2021, 0603 UTC by Heathkit »

Offline zeak

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Re: 4100.04 KHz "H"
« Reply #13 on: December 04, 2021, 1623 UTC »
Propagation at lower HF was odd over the last 24hrs, even at the lower SFI. I had excellent copy on "H" (569-589) beginning at 0140Z and continuing through ~1400Z. Never experienced that in the prior weeks since the beginning of fall.

Zeak,

Receiver KiwiSDR
Ant(s): 80m dipole at 15m and 1m Loop
location:  DM12
Zeak,

Receiver KiwiSDR
Ant(s): 80m dipole at 15m and 1m Loop
Location:  DM12

Heathkit

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Re: 4100.04 KHz "H"
« Reply #14 on: December 04, 2021, 1723 UTC »
It must be at the bottom of an ancient well, 50M deep in the middle of Mexico with a completely NVIS antenna  ;D ;D ;D

73's

 

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